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STOCK-BASED COMPENSATION AND STOCKHOLDERS' EQUITY (Tables)
 6 Months Ended
Sep. 30, 2023
Equity [Abstract]  
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
The following table presents stock-based compensation expense (in thousands):
 Three Months Ended September 30,Six Months Ended September 30,
 2023202220232022
Cost of service revenue$1,137 $2,436 $2,823 $5,100 
Cost of other revenue459 925 854 2,036 
Research and development5,415 7,711 13,048 15,755 
Sales and marketing3,917 6,809 8,566 14,917 
General and administrative3,592 6,740 7,426 14,627 
Total$14,520 $24,621 $32,717 $52,435 
Disclosure of Share-Based Compensation Arrangements By Share-Based Payment Award
The following table presents the RSU activity (shares in thousands):
Number of
Shares		Weighted
Average Grant
Date Fair Value		Weighted Average
Remaining Contractual
Term (in Years)
Balance as of March 31, 202312,993 $8.56 1.84
Granted6,497 3.95 
Vested and released(5,318)8.53 
Forfeited(1,204)7.30 
Balance as of September 30, 202312,968 $6.38 2.06
The following table presents the PSU activity (shares in thousands):
Number of
Shares		Weighted
Average Grant
Date Fair Value		Weighted Average
Remaining Contractual
Term (in Years)
Balance as of March 31, 2023624 $11.30 1.45
Granted2,023 1.23 
Forfeited(116)21.83 
Balance as of September 30, 20232,531 2.77 3.12